I got 252 kHz Ireland radio. This was verified by opening up a web browser to the web SDR in the Netherlands and comparing the sound.They were broadcasting some sort of music. This was just after midnight GMT.

Very bad signal, overlaid by two big CW carriers which I've removed from the attached recording.

Edit: I retract Ireland. I listened later to Enschede and heard two stations,one spoken French. The Enschede legend says both IRE and ALG,so maybe it was Algeria. Whatever it was, it was very strong in the Netherlands.

The file is a zipped mp3. This forum would not allow the mp3 itself as an attachment.Unzip it.

On another topic ... I see dozens of obvious "data" stations on shortwave. I've tried decoding many and for most I can't even tell what type they are.

I can decode the DGPS stations around 300 kHz, lots of low-power digitalham stations (WSPR and others) and once decoded an RTTY station on 160m thatlooked like it was an ARRL broadcast.

But I've never decoded any other RTTY station, ham or otherwise. I can find lots oftables on the web that list frequencies of these things (RTTY and other)... and the only one I foundis WHO, which does not look like it transmits actual data. There are lots of signalsI get with high S/N but they don't decode and simply are not there on those lists. Is there something better than Multipsk?Is there a place that lists decodable signals that are actually there and listing the mode?Are there FAX or SSTV signals I can find and decode?

Is the problem with the multiple what look like RTTY stations around 6 and 8 MHz that I am decoding them but they are encrypted? I could list frequencies.

Other than "wrong mode" and/or "encryptation" is there something I'm totally clueless about?

I really don't know much about those although much of it in the areas you mentioned except ham are military, Stanag, FSK PSK,Link 11 I think is NATO , other militaries and who knows what else . The decodes are encrypted. Try in the designated ham bands. This SDR has the mode identifier tags on some. If you can find one active with a tag then you can get an idea.http://n4tvc.zapto.org:8073Someone else here may be able to tell you more

I have Black Cat systems for I phone and it is sufficient and also the SSTV app that you just set it by the speaker. The auto mode such as Scottie1 doesn't work well , some of the time you will have to scroll through while it's running but it works once that's right. The PC version is the best though , I would recommend that route rather than tablet or phone.I am about to order a multi app combo from them so I will post the results

SSTV can be found in the Ham Bands and of course very popular on Pirate radio.

Earlier this evening I again heard Algeria, and heard the actual words naming the station.As it faded out, the BBC on 198 faded in. I clearly heard the words BBC. They are nowtalking about the environment (heard from Enschede) and I can hear a few distinguishable words.This evening I'm using selected sideband and hear both of them ... the upper one at the momentwith only a very weak sideband of a co-frequency beacon's upper MCW sideband transmitting their code.The BBC has started fading as I write. The carrier is still there and the beacon is off by 4.5 Hz.I understand that the BBC carrier is still a frequency standard.

Its faded in again and I can hear phrases:"Headquarters. How do you make your" "I've never been there. I used to live in London"

Next for me to try should perhaps be those pirate broadcasts. I needthe time and frequency, and also instructions on how to get proper (color)FAXs.

I got FAXs from a weather site last night, excellent quality. But I onlygot text at the end correctly aligned with the page. I tried the synchro buttonjust before it. I came in in the middle of what looks like a map, but its all screwed upboth contrastwise and horizontal alignment wise. Thus help is needed.

At the beginning each of the USCG broadcasts there is a tone that starts the decode automatically on some devices. There will be several charts, a start tone for each. Don't be surprised if a single map takes 15 mins The schedule for US is here http://www.nws.noaa.gov/os/marine/radiofax.htm

It sounds to me if it's grainy and a lot of contrast , you're not on freq. Should be a white clean background. While it's running adjust it 1.9 khz below he freq listed . Then fine tune until the map clears and has resolution. This is critical.The split map is a problem on my device as well. I don't know how to fix that, some of the maps are quite large. Wasn't a problem because you still had 500 to 1000 mile view.

There have been numerous SSTV all afternoon @ 6930 usb 2/3.

Attachments:

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Last edited by davep on Feb Sun 04, 2018 2:06 am, edited 6 times in total.

On 2/12/18 I got a map from NMF Boston covering 30 to 70N x 50 to 10west @6340.5khz 1400zshowing Hurricane force winds near 50n 40w. https://imgur.com/gallery/qrr1qI was able to copy a text synopsis from New Orleans on 4317 kHz

Both 6340 and 4235 from NMF were jammed during230z

The size of the map copied by I phone is I believe more than 1000x1000 , however it printed about 1/2 of the paper size sent directly to the printer without doing anything other than pushing send

Last edited by davep on Feb Wed 14, 2018 5:30 am, edited 6 times in total.

I was able to receive on it more or less everything I could on my Airspywith a 4 kHz bandwidth and if the BFO on, it set in the middle,as that's what the BC453 alignment sets it at. The airspy got much moresince it can use custom bandwidths down to 5 Hz.

But .. as I was trying to find Ireland and Algeria on 252 kHz (which did come in very weakly) I noticed a voice on 254 reading weather forecasts foraviation. This seems to be Batesville, IN, 170 miles away.

I thought my Airspy/Spyverter was broken last night, the antenna noise was so low. At 2.05 MHz the noise level was only 7 dB above the preamp floor! Normally its much higher. After checking everything I tried my R390A and it was S-2 for the noise! I've never seen that before.Eventually the high signal levels convinced me that in fact it was lowered noise, nota bad antenna. This antenna has very low gain below 4 MHz however, as its 40feet lying on the concrete of a parking lot, with my car as ground. Its the car ground that makes the low noise, lower even than to a water pipe (as the latter is connected to the apartment ground). At 10 MHz the noise was lower than usual, but still far above the receiver noise. At 200 kHz the noise was so low that I had touse a very low noise transistor preamp before either the Spyverter or BC-453! Results below 420 kHz were spectacular, signals almost every kilohertz.